- In addition to these benefits, double iridium spark plugs enhance engine performance by providing a cleaner burn. This results in smoother engine operation, reduced engine knocking, and enhanced responsiveness. They also contribute to a quieter, more comfortable ride due to their ability to maintain a stable spark under varying engine conditions.
For a more detailed discussion of seal characteristics, please see the following:
Seal characteristics
② Spring code

Make sure that the new gasket is clean, and confirm which way round it fits. The upper side is usually marked 'top', 'haut' or 'oben'.
Oil seals close off the space between stationary and moving components in the mechanical equipment. It saves the lubricant from escaping through the equipment and ensures smooth operation of the machine.

silicone rubber gasket. This resistance makes them suitable for use in industries where exposure to harsh chemicals is common, such as in the chemical processing, pharmaceutical, and food and beverage industries. The inert nature of silicone rubber also prevents it from reacting with the substances it comes into contact with, ensuring a long-lasting and reliable seal.
ERIKS also supplies the types GR and GRST. These are virtually identical to the types R and RST, except in this case the metal inner ring is also completely encased in rubber. ERIKS uses FKM rubber here as standard, so these seals are ideal for use in acidic environments.
-20 °C to + 130 °C
Slacken the alternator or dynamo adjuster and pivot bolts, push the unit inwards and ease off the drive belt. Remove the belt completely.
Size #: Corresponds to sizes found on our Oil Seal Size Chart. The interactive chart will display matching sizes based on the dimensions input for Shaft, Bore, and Width. The Oil Seal Size # is hyperlinked to our online store, which will display all sizes matching the selection.
Oil Seal Installation Guide
Despite being incredibly flexible, silicone has some significant drawbacks. The toughness, resistance to wear, and abrasion of many silicone compounds are poor. If you seriously need an oil seal material with better strength and resistance to high temperature, the perfect option is Viton.